Side by side

Hamilton Khaki Aviation Pilot Day Date AutovsSeiko Alpinist

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Khaki Aviation Pilot Day Date Auto

The Hamilton Khaki Aviation Pilot Day Date Auto features an 80-hour power reserve and hacking, with quick-set day and date functions. One owner noted aggressive rotor spin during hand-winding at certain angles, questioning if service was needed. A reviewer criticized the day display's proximity to the center pinion, suggesting a date-only function would have been preferable. Overall, owners and reviewers find the Hamilton Khaki Aviation Pilot Day Date Auto offers practical complications and a substantial power reserve, though the day display's execution is a point of contention.

Seiko Alpinist

Owners widely praise the Seiko Prospex Land Mechanical for its durability, accuracy, and value, with many appreciating its versatile style and useful day-date complication. Some owners highlight the 70-hour power reserve and 20 bar water resistance as significant benefits. However, opinions are divided on its size and thickness, with some finding it too large and heavy for a field watch, while others consider it a perfect or comfortable fit, especially at 38mm. There is also disagreement regarding the crystal type, with some criticizing the Hardlex while others appreciate the sapphire. Overall, owners rate the Seiko Prospex Land Mechanical highly for its robust performance and good value, despite differing views on its dimensions.

At a glance

12 of 29 specs differ
Diameter
Khaki Aviation Pilot Day Date Auto42mm
Alpinist39.5mm
Power Reserve
Khaki Aviation Pilot Day Date Auto80h
Alpinist70h
Water Resistance
Khaki Aviation Pilot Day Date Auto100m
Alpinist200m
MSRP
Khaki Aviation Pilot Day Date Auto$1,125
Alpinist$750

Full specifications

Case

5 specs
Category
Pilot
Field
Diameter
42mm
39.5mm
Thickness
11.85mm
13.2mm
Lug-to-Lug
0mm
46.4mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-40 (ETA 2834-2 base)
Seiko 6R35
Power Reserve
80h
70h
Jewels
0
24

Pricing

1 specs
MSRP
$1,125
$750
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Hamilton Khaki Aviation Pilot Day Date Auto vs Seiko Alpinist gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.